Calculating machine



March 1939- F. A. NIEMANN Er AL 2,149,317

CALCULATING MACHINE Original Filed Nov. 5, 1934 5 Sheets-Sheet 1 March'7, 1939. F. A. NIEMANN r AL 2,149,817

CALCULATING mourns Original Filed Nov. 5, 1934 5. Sheets-Sheet 2 March 7, 1939- F. A. NIEMANN 1-: AL 2,149,817

CALCULATING MACHINE Original Filed Nov. 5, 1934 5 Sheets-Sheet 3 INVENTORS. -v Mam 94 BY Md.

Ill/II) L93 8g W W44 ATT EY.

March 7, 1939. F. A. NIEMANN ET AL CALCULATING MACHINE Original Filed Nov. 5, 1934 5 Sheets-Sheet 4 igg km'y I FAME w lmwrumnn); 1.11

CALCULATING MACHINE Original Filed Nov. 5, 1934 5 Sheets-Sheet 5 NNXNN Patented Mar. 7, 1939 CALCULATING MACHINE Frederick A. Niemann, Chicago, and Joseph A. V.

Turck, Wilmette, Ill., assignors to Felt & Tarrant Mfg. 00., Chicago, Ill., a corporation of Illinois Original application November 5, 1934, Serial No.

751,526. Divided and this application November 22, 1935, Serial, No. 51,096

11 Claims.

, This invention relates in general to calculating machines and has more particular reference to the provision of' an improved registering mechanism adapted to supplement the ordinary registering mechanism employed in calculating machines generally, and is a division of our copending application Serial No. 751,526, filed November 5, 1934 and issued September 20, 1938, as Patent No. 2,130,364.

A principal object of the invention is the provision of a registering mechanism supplemental to the ordinary registering mechanism of a calculating machine.

Another important object of the invention is the provision of means for locking the total transfer lever during operation of the ordinary registering mechanism zeroizing lever.

Another important object of the invention is the provision in a machine of the character described of means preventing operation of the ordinary zeroizing lever while transfer of totals to the supplemental registering mechanism is being effected.

Another important object of the invention is the provision of locking means for locking the ordinary actuating mechanism against operation during the transfer operation.

Another important object of the invention is the provision of an error lock for preventing operation of the super-totalizer mechanism in the event of partial depression of a numeral key.

Another important object of the invention is the provision, in a machine of the character described, of locking features which eliminate the possibility of error in a transferring operation from the ordinary registering mechanism to the supplemental registering mechanism.

Numerous other objects and advantages of the invention will be understood from the following description, which, when taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

On the drawings, 7

Figure 1 is a partial plan view of a calculating Fig. 2 is a partialvertical section taken at the left of the machine, showing details of the ordinary and supplemental registering mechanisms;

Fig. 3 is a partial top plan view showing certain details of the ordinary and supplemental registering mechanisms;

Fig. 1 is a partial sectional e'evation of the machine with the left hand outer wall removed;

tails of the locking feature which insures halting of the control crank after a full rotation;

Fig. '10 is a full size section showing details of another locking feature;

Fig. 11 is a similar view showing a further adaptation of the locking feature; and

Fig. 12 is a partial sectional elevation of the machine with parts broken away for the purpose of more clearly illustrating certain members.

Referring to the drawings, the present embodiment of the invention is shown incorporated in a calculating machine of the multiple-order keydriven type, such as the well-known duplex comptometer, the general character of which is 25 shown and described in United States Letters Patent to Door'E. Felt,Nos. 762,520, 762,521,

960,528, 996,009, 1,003,723 and the patent to Kurt F. Ziehm No. 1,110,734. The invention is particularly adaptable for use in connection with 30 the multiple-order key-driven type of calculating machine in which is embodied a zeroizing mechanism having the general characteristics disclosed in United States Letters Patent No. 1,357,748 to Joseph A. V. Turck.

The details of construction of this type of machine are fully described in these earlier patents and it is not believed necessary to here set forth other than a brief description of the general features of the machine and such parts as 40 are directly concerned with the operation of the present invention for a complete understanding thereof.

The various instrumentalities of the calculating machine are supported by a frame mounted 45 machine of themultlple-order key-driven type in "which the present-invention is embodied;

on a base ll of the casing. The frame consists of side skeleton plates [5 and intermediate skeleton plates 16 disposed between the various actuating mechanisms of the several orders of the machine and all tied together at suitable points by transverse tie rods H. A number of columns of nine keys each are provided, each key being indicated by reference numeral 3, there being a column of nine keys for each numeral wheel 19 of the ordinary registering mechanism, together with the actuating mechanisms and attendant parts responding numeral wheel. The registrations indicated by the several numeral wheels, which constitute the answer to a calculating operation performed by the machine, may be viewed through sight openings 2! in the cover plate of the casing above the respective numeral wheels.

Each column of keys forms a part of an accumulator mechanism for transmitting to its numeral wheel an amount of travel proportionate with the particular key operated and the accum- I ulator mechanism for each column of keys and its corresponding numeral wheel includes a column actuator 22, in the form of a spring-returned segment lever, as shown in Figs. 2 and 8, adapted to be depressed an amount determined by the particular key l8 actuated by the operator.

Each key is provided with a stem 23 extending down and bearing upon a column actuator 22, and the key at the extreme front of the machine, being further from the pivotal axis of the column actuator than the key at the rear of the machine, moves the column actuator through a lesser arc than does the key last mentioned. The keys of each column bear the numbers 1 to 9'in front-to-rear order, together with their complements, and the key at the extreme front is adapted to effect actuation of the column actuator through an are approximately one-ninth of that produced by the operation of the key at the ex treme rear of the machine, and upon depression of intermediate keys the column actuator is moved through arcs proportionate with the value of the intermediate key depressed.

The column actuator 22 of each order or column of nine keys of the machine is adapted to impart calculating movement to an accumulator and for this purpose is .provided at its forward end with a rack 2d which meshes with an accumulator pinion 25 journalled upon a transverse shaft 26 supported in suitable bearings in the skeleton frame.

The pinion 25 of each order forms a part of an internal ratchet mechanism disclosed in the prior patents hereinabove mentioned and which becomes eiiective upon the upstroke of the column actuator to clutch the pinion 25 to a lantern wheel 27 and a transmitting pinion or gear 28 that rotates with the lantern wheel and is adapted to mesh with a gear 29 journalled on a shaft 38 parallel with the aforesaid shaft 26.

The gear 29 meshes with an intermediate gear 32 on a transverse shaft 33 and the latter in turn meshes with the numeral wheel pinion 34 journalled on a transverse shaft 35 and fixed to the numeral wheel l9 of the registering mechanism. It will be understood that each time the column actuator is depressed the ratchet mechanism movesidly and no motion is transmitted to the gear train beginning with the transmitting pinion 28 and ending with the numeral wheel pinion 34; however, uponv the return or upward movement of the column actuator through its spring action, the transmitting pinion 28 is clutched to the accumulator pinion 25 and the gear train rotates the numeral wheel l9 through the arc determined by the particular key depressed.

Carrying mechanism is provided in each accumulator mechanism for the purpose of actuating the accumulator of the next higher order of the machine each time a carry is to be transferred from a lower order. For the present purposes it will not be necessary to give a detailed explanation of the carrying mechanism, and a actuator of said next higher order.

brief reference to parts of the carrying mechanism, together with a general statement of their function, will be sufficient because ample description of the same will be found in the prior patents hereinbefore mentioned.

The carrying mechanism in each order is of the standard duplex comptometer type having provision for permitting ordinal keys to be depressed simultaneously and column actuator impulses delivered, in two or more adjacent orders, and yet for preventing any carrying impulses released from a lowerorder from being delivered to the next higher order until the column actuator movement of such higher order is completed. This operation of effecting simultaneous keydriven actuation of a plurality ofcolumn actuators in adjacent orders, the strokes overlapping each other in any manner, is the action that has been referred to as duplexing."

In addition to its function as a member of the gear train for transmitting the motion of the column actuator to the numeral wheel G9, the gear 29 is a carrying motor winding gear and secured thereto is the usual carrying motor spring 36. The other end of this motor spring is secured to the usual carrying escapement 31 that is adapted to be engaged by first one and then the other of the pair of release detents 38, 39, so that when said escapement is released by one of the detents, it can make only one-half of a full rotation before being checked by the engagement of the escapement with the other of said detents, each said half rotation of the escapement imparting a carrying 38, 39 in the usual way, shifts the hell crank carrying lever sufiiciently to cause the carrying transfer pawl 88 to throw the lantern wheel ratchet of the next higher or left hand accumulator one numeral space, which movement of the lantern wheel 'is transmitted through the above mentioned train of gears ending with the numeral wheel pinion 34 to effect a carrying transfer from the accumulator mechanism of the lower order to the accumulator mechanism of the next higher order.

In order to prevent either cam on the carrying escapement from effecting a carrying throw of the cooperating bell crank carrying lever at a time when the accumulator of the higher order impelled by said carrying lever is already in motion or is about to be moved by the column actuator that has been or is being depressed by one of the keys in that higher order, there is provided a detaining latch tooth formed on the front end of a stop detent 42, in said higher order, which stop detent 42 is pivotally mounted on the carrying bell crank lever and is adapted to be actuated by a spring to shift such detaining latch tooth into restraining engagement with either one of two stops formed on the carrying cam escapement 3?.

Normally the detaining latch tooth is held out of engagement with the stop of the carrying escapement 31 by the dolly roll on the column On depression of such column actuatonhowever, the dolly roll moves out of engagement with the stop detent 42, thereby permitting the spring to shift said stop detent 42 into such position that the detaining latch tooth formed at its opposite end is in engagement with the stop of the escapement member, and this relation of parts is maintained until the column actuator regains its normal elevated position. Hence, so long as a column actuator is in a position other than its normal elevated position, and notwithstanding a release of the escapement member by either one or the other of the releasing detents 38, 39, the carrying cam is prevented from making a carrying throw to lift the carrying lever until the detaining latch tooth is again moved out of engagement with the stop of the escapement, by the return to normal 'of the column actuator of the next higher order, the order that is to receive the released carrying throw. It is thus provided that keys may be depressed simultaneously and column actuator impulses released from a lower one of said orders will not be actually delivered to the next higher of said orders until the column actuator movement of such higher order is completed.

The operation of effecting simultaneous keydriven actuation of a plurality of column actuators in adjacent orders, the strokes overlapping each other in any manner, is the action that has been hereinbefore referred to as duplexing.

Such is, in brief outline, the manner in which prime actuations and carrying impulses are imparted to the actuator mechanisms in the duplex.

comptometers of the aforementioned patents. It will be understood that these actuating mechanisms are associated with various stop mechanisms set forth in these early patents, to limit the movements imparted to the actuator mechanisms by the prime actuations and carrying impulses. All of these mechanisms are shifted variously into and out of their various stop positions to impose additional restriction to the movements of the carrying devices and to the prime actuations of the accumulators.

The zeroizing mechanism illustrated on the drawings, is, broadly stated, of the type disclosed in United States Letters Patent No. 1,357,748 wherein the zeroizing operation, i. e., the return of the numeral or register wheel l9 and associated parts to zero position, is accomplished by disconnecting the connections between the numeral wheels and the actuating devices so that while retaining the various stop devices in their normal relations to the accumulator mechanisms the stored power in the carrying springs may give to the numeral or register wheels backward rotations so as to move them rearwardly from the divers positions they may occupy and to stop them when they individually arrive at zero position.

zeroizing is effected by detraining or disengaging the carrying spring winding gears 29 from the transmitting pinions 28. The shaft 26 of the transmitting pinions 28, as well as the shafts 35 and 33 of the numeral wheels l9 and the intermediate gears 32, are mounted in bearings fixed in the frame of the machine. In order to effect detraining or disengagement of the gears 29 from the transmitting pinions 28, the shaft 3| of said gears 29 is carried by a swinging frame that is adapted to have a restricted outward pivotal movem nt on an axis coincident with the shaft 33. This swinging frame in general comprises partition plates 43 connected together at suitable points by transverse tie rods 44 to form a unitary structure and is under the control of the zeroizing lever 45 shown in Fig. 8.

A short transverse shaft 48 is journaled in a bearing in the right hand side plate [5 of the fixed frame and this shaft projects through the outer casing and carries at its outer end the zeroizing handle or lever 45. A segment is fixed upon the inner end of said transverse shaft 46 and pivoted to said segment is a link 41 which in turn is pivoted to a depending lever 48 that is pivoted at 49 on the fixed frame. The lower end of said lever arm 48 is pivotally connected by means of a short link 5| with an arm 52 rotatably mounted with respect to a transverse shaft 53 that is journalled in the fixed frame. The arm 52 is provided with an engaging face 54 adapted to contact with a rocker arm55 fast on the shaft 53. When the parts are in the relative position indicated in Fig. 8, a short pivotal movement of the zeroizing lever 45 toward the left will, through the segment 58, the link 41, lever arm 48, short link 5|, arm 52 and rocker arm 55, impart a short rocking movement to the shaft 53 in a counterclockwise direction.

Fixed on the shaft 53 and rotatable therewith are other rocker arms 56, shown in Figs. 2 and These rocker arms 56 are pivotally connected with curved links 51 having slotted shifting pivots upon a transverse shaft 58. The forward end of each of said curved links 51 is provided with a pin 59 positioned within the spaced jaws SI of the inner member of a toggle B2. The toggle member 62 is pivoted between its ends on a shaft 63 carried by the swinging frame and the outer -end of each toggle member 62 is pivotally connected by a shaft 64 with the other member 65 of the toggle. The s'everal toggle members 55 are pivoted on studs 66 mounted on the fixed frame and these toggle members 65 are respectively provided with depending arms 81 having stop projections 68 adapted to engage the toggle members 65' and to limit their movement upon rocking the shaft 63 in a counter-clockwise direction.

Upon operation of the zeroizing lever 45 to effect canceling, i. e. toward the left viewing Fig. 8, the link and lever connection imparts a counterclockwise rotation to the shaft 53 which, through the above described toggles and other parts, is accompanied by an outward swinging of the swinging frame and a resultant detraining of the winding gears 29 from the gears 28. Detraining the gears 29 from the gears 28 leaves the carrying gear springs 36 free to unwind and such unwinding occurs until the numeral wheels l9 arrive at zero. The unwinding action of the springs is terminated by stops which are 7 projected by the toggles into the path of lugs riveted to the gears 29, all as fully set forth in Patent No'. 1,357,748. The swinging frame is retained in its outward position after a. zeroizing operation has been effected, and the gears 29 are maintained in disengagement with respect to gears 28 until the operation of one of the keys l8, as described more fully hereinafter and in detail in the aforesaid patent.

The present invention is more particularly concerned with the provision of a registering mechanism supplemental to the ordinary registering mechanism that is adapted to be operated in connection with the ordinary registering mechanism hereinabove described, whereby a set of figures indicated on the numeral wheels I9 may be quickly and efiiciently transferred to the numeral wheels of the supplemental registering mechanism and the total indicated on the numeral wheels thus preserved: Improved carryingmechanism is provided in the supplemental registering mechanism; so that it has a capacity for successive registrations, with the result that several totals in successive or other order may be transferred from the ordinary numeral wheels to the numeral wheels of the supplemental registering mechanism and a grand total of the individual totals so transferred indicated on the numeral Wheels, of the supplemental registering mechanism. The supplemental registering mechanism is thus not only useful for preserving totals of individual calculating operations performed on the machine but also for givingthe grand total of such in dividual totals as may be transferred from the ordinary registering mechanism to the supplemental registering mechanism.

0n the right hand side of the casing (viewing Fig. l) is an operating handle or crank 69 which actuates a control shaft 1| supported by and extending transversely through the frame of the machine and adapted to be rotated in a clockwise direction (viewing Fig.8). Upon rotation of the handle 69. a heart-shaped cam 12, fixed on the shaft H, is rotated, camming to the right (Fig. 2) aroll 13 on a vertical arm 14 which is pivoted at its upper end on a shaft 15. At its lower end the vertical arm 14 is provided with a stud 16 in engagement with a slot in a horizontal lever ll extending rearwardly and pivoted at 19 to the rocker arm 56 fixed to the transverse shaft 53 earlier described. 7

Upon clockwise rotation of the handle 59 and shaft H, the heart-shaped cam 12 cams the roll 13 forwardly, thereby swinging the lever '71 to the right and rocking the shaft 53 of the swinging frame to move the swinging frame forwardly for a purpose to be later described.

Mounted in the side plates 43 of the swinging frame is a transverse shaft 18 which carries a set of transfer pinions 19 in mesh with the carrying winding gears 29. The pinions 79 are for the purpose of transferring the totals of numeral wheels l9 through intermediate gears 32 and carrying winding gears 29, when the latter are being turned rearwardly to the zero position in the zeroizing action, to the gearing of the supertotalizer or supplemental registering mechanism in a manner as will be fully set forth hereinafter. The unwinding of the carrying gear spring 36 in the zeroizing operation earlier described patentsdoes not furnish the power needed to transfer the ordinary totals into the supplemental registeringm-echanism and means are provided to furnishjhe necessary power to effect the transfer.

Supported by the partition plates 8! of the supplemental registering mechanism frame is a transverse shaft 82 provided with ball ends (Fig. 6) parallel to and in a plane slightly above the shaft 18 of the ordinary swinging frame, and journalled on this shaft are compensating devices, generally indicated at 83, with which the pinions 19 are adapted to engage upon the forward movement of the swinging frame.

These compensating devices 83 are interposed between the ordinary and supplemental mechanism tosup'plypower of the carrying springs 36 topositively zeroize the ordinary numeral wheels l9 and transfer the totals indicated on the ordinary numeral wheels to thesupplemental registering mechanism. As shown in detail in Fig. '7, each compensating device 83 comprises a hub portion 89 and a gear portion 84a, the hub portion being threaded adjacent one end and provided with a keyway 89 to receive a tongued washer B6. Graphite Washers 85 are positionedon either side of gear portion 98a and a spring washer 81 is interposed between the tongued washer 86 and an ordinary washer 88. Threaded on the hub is a spring nut 89 and a lock nut 9|. A dowel pin 92 is driven into, the shaft '82 and is maintained in position by the flange portion 99 of lock nut 9|.

The spring nut 89 is provided with notches adapted to receive a spanner wrench in adjusting the amount of friction necessary for'the gear. The lock nut 91 is also provided with notches to receive a spanner Wrench for locking the spring nut 89 in position. The compensating devices 83 are normally out of mesh with the supplemental mechanism transmitting pinions 93 journalled on a transverse shaft 94 supported by the partition plates 8!, but upon initial rotation of the handle 69 the transverse shaft 82 and the compensating devices are moved axially to the left (viewing Fig. 1) by means of the cam face of the ratchet cam 95, camming the balled end of the shaft 82 axially to the left and moving the compensating devices into engagement with the transmitting pinions 93. Upon initial movement of the handle or crank 69, the compensating-devices are moved into engagement with the transmitting pinions 93 and upon further rotation of the crank 69 the swinging frame of the ordinary mechanism is rocked forward, as already described, moving the pinions 19 into engagement with the gear portion 84a, thereby completely entraining the ordinary and supplemental mechanisms. Upon further rotation of the crank 69 the teeth of an intermittent gear 96 (Fig. 8), journalled on the shaft ll, mesh with an intermittent pinion 97 fixed on the shaft 82 rotating the shaft 82 one complete revolution and rotating the gear portion 84a an amount controlled by the carrying gears 29 equal to the amount registered on the numeral wheels l9.

The construction of the parts is such that one complete revolution of shaft 82 and compensating device 83 will transfer 9 from the ordinary numeral wheel [9 to the super-totalizer wheel I03. It will be apparent that if the total to be transferred is less than 9 on any individual wheel IS, the gear portion 8411 will be halted in its movement by the halting of carrying gear 29, as described in Patent No. 1,357,748, and continued rotation of shaft 82 is permitted by the construction of the compensating device as already described.

A bar 83a notched as indicated at 3322 (Fig. 3), extending transversely across the several orders of the supplemental mechanism and secured to the outer partition plates 8! is provided to insure proper engagement of gear 84a with transfer pinion 19 and transmitting pinion 93.

Regardless of the power stored in carrying gear springs 36, which is normally used to return the numeral wheels l9 to zero, rotation of compensating device 83 through transfer pinion 19 and the train of gearing heretofore described drives the numeral wheel l9 to zero.

Simultaneously with zeroizing the ordinary numeral wheels, the compensating devices impart motion to transmitting pinion 93 and thence to lantern wheel ii 9 of the super-totalizer mechment.

the numeral wheel I03 of the supplemental or super-totalizer registering mechanism. The numeral wheels I03 are provided with a set of fig-- ures or other indicia corresponding to the ordinary numeral wheels I9 and adapted to be viewed through a set of sight openings l03a formed in the cover plate of the casing above the respective numeral wheels of the supertotalizer registering mechanism.

Carrying mechanism is provided in each supplemental accumulator mechanism for the purpose of actuating the accumulator of the next higher order each time a carry is to be transferred from a lower order but as the mechanism employed is identical to that of the ordinary accumulator mechanism, further description is not thought necessary.

Counter-clockwise movement of the handle or crank 69 (Fig. 8) is prevented by means of a pawl I04 which idles over the teeth I05 of the ratchet cam upon clockwise rotation of the handle 69. The pawl I04 is provided with a hub pivoted on the shaft I00 and is normally held in engagement with the teeth I05 of the ratchet cam by means of a spring I01.

Means are provided to disengage the compensating devices 83 from the transmitting pinions 93 after transfer of totals from the ordinary registering mechanism to the supplemental registering mechanism has been completed. Journalled on the shaft H at the left hand side of the machine is a cam I08 (Figs. 6 and 4) slotted for a purpose to be later described, which cam co-acts with ratchet cam 95 and is adapted to engage the ball end of the shaft 82 urging the latter to the right after the function above-mentioned has been accomplished.

The invention further provides means for releasing the carrying mechanism embodied in the super-totalizer registering mechanism in order to permit the transfer of a plurality of totals from the ordinary registering mechanism to the supertotalizer registering mechanism and the indication of a correct grand total on the super-totalizer mechanism. The releasing means provided in accordance with the invention is detained in its operation during the step of transferring the totals from the ordinary registering wheels to the super-totalizer registering wheels I03, 1. e. while the compensating devices are engaged with the super-totalizer transmitting pinions 93.

Viewing Fig. 2 it will be noted that attached to and adjacent the ends of control shaft H by pins threaded through their hubs are cams I09 adapted, near the end of a complete revolution of the control shaft, to contact rollers III suitably secured to levers I I2, two of which are provided, adjacent the fixed frames on either Me of the super-totalizer mechanism. The levers II2 are pivoted at their upper ends upon the shaft 15 and are slotted to permit vertical move- The lower ends of levers II2 are bifurcated and the jaws II2a embrace control shaft H.

The lever H2 is provided with a depending arm II3 through which a shaft II4, extending across the machine, passes. A spring H5 attached to arm 3 normally restrains lever H2 and shaft I I4 from upward movement. Near the completion of one full revolution of the control shaft the cams I09 engage the rollers III, camming the levers II2 upwardly against the tension of spring H5 and raising the shaft II4, thereby elevating the stop detent II1 of the carrying bell crank lever into engagement with the pins of lantern wheel II6. As the stop detent H1 is lifted, a detaining latch tooth, formed on its opposite end, is lowered releasing the escapement II9, allowing it to bear against a roll mounted on the carrying lever urging it rearwardly, and through its pawl I2I moving the lantern wheel II6 one-tenth of a full rotation or enough to impart through the. train of gears suflicient movement to turn the numeral wheel and complete the carry of one from a lower to a higher order.

As earlier described, means are provided for preventing counter-clockwise movement of the handle or crank 69. In addition, means are provided for halting the handle 69 after one full revolution of control shaft H, and looking it against further clockwise movement until redepression of a numeral key I8. A lower detent shaft I22 (Figs. 8 and 9), journalled in the swinging frame plates 43 is adapted upon forward movement of the swinging frame to engage a stop I23 mounted on shaft I24, moving the stop I23 into the path of astud I25 secured to the intermittent gear 96. Upon a full rotation of the crank 69 the stud I25 engages the stop I23 restraining the crank from further movement until operation of one of the keys I8, which, through various mechanisms described in the earlier mentioned patents, swings the rock frame and shaft I22 rearwardly permitting the stop I23 to return to its normal position out of the path of travel of stud I25 under the tension of a spring I26 attached to a depending arm I21 of the stop I23., At its opposite end the spring is attached to a stud I28 in the frame. As the stop is moved out of the path of the stud I25 the arm I21 engages a shaft I29 limiting further movement of the stop. In the detraining of the gears 28, 29 as above described, in which the shaft 53 is rotated in a clockwise direction from its position of Fig. 2, a toggle mechanism comprising a lever I59 pivoted at one end o a lever fixed to shaft 53 and at its other end to a lever I6I, which is in turn pivoted on a shaft I62, is extended slightly past dead center position from its normal position of Fig. 2. In such movement, a spring I63 is tensioned, the spring being connected at one end to a fixed part of the machine and at its other end to the toggle mechanism by a link I64. The parts remain in this position in which the gears 28, 29 are detrained until a key I8 is subsequently operated. Operation of a key I6, through its associated column actuator 22, moves the toggle I59, I6I past dead center position from where it is returned to its position of Fig. 2 by the spring I63, thus rotating the shaft 53 in a counter-clockwise direction to move the swinging frame 43 back to its position of Fig. 2 to re-engage the gears 29, 29. This returning of the swinging frame, which returns the detent shaft I22 to its broken line position of Fig. 9, is more fully described in the above-mentioned patent to Turck No. 1,357,748. The instant parts I59, I6I, I62, I63 and I64 correspond to parts I09, IIO, III, I01 and I06, respectively, of this patent.

Zeroizing mechanism is provided for returning the numeral wheels I 03 of the super-totalizer registering mechanism to zero positions. Located on the left hand side of the machine is the super-totalizer zero crank I30 (Fig. 4) extending through the outer casing and the fixed frame into the crank main piece I3I where it is held in place by a tapered screw I58 (Fig. 3). On the upper end of the crank main piece I3l are provided a plurality of teeth I32 adapted to ride over a pawl I33, on its down stroke and upstroke, preventing reversal of the zero crank before a full stroke has been obtained in either direction. Arms I34 (Fig. 5) on either side of the teeth I32 limit the movement of the zero crank by engaging a stud I35 fixed to the frame.

Adjacent the zero crank mainpiece I3I is a vertical lever I36 slotted at its upper end which is adapted to be lowered and raised by means of the cam face of the crank main piece I3I bearing against a roll I31 secured to the lever I35. At its lower extremity the lever I36 is fastened to a stud in the arm I38 of the supertotalizer actuating shaft I39 of the super-totalizer swinging frame. Upon actuation of the cam crank I30 in a zeroizing operation the cam face of the zero crank main piece I 3I bears against the roll I31 of the vertical slotted lever I35 urging the lever downward and oscillating the frame swinging shaft of the super-totalizer, thereby detraining the gears and allowing the numeral wheels to return to zero in the manner described in connection with the ordinary registering mechanism.

An arm II of slotted lever I36 is adapted upon the lowering of the lever I36 to enter the slot I42 in the cam I08 thereby preventing any movement of the control shaft handle 69 until the zero crank has returned to its normal position after the zeroizing operation.

Likewise, upon rotation of the handle 59, any movement of the zero crank is prevented because the slot I42 in the cam I08 has been moved with the shaft II and upon attempting to operate the zero crank I30 the arm I4I strikes the outer edge of the cam I08 and is thereby restrained from further movement.

In accordance with the present invention, provision is ,made for lockirg all ordinal series of keys upon initial movement of the crank handle 09 in transferring totals from the ordinary registering mechanism to the super-totalizer registering mechanism.

A lever I43 located at the lower right hand of the machine (Figs. 8, and 11) is provided with a two-legged hub portion pivoted on the shaft I24, the inner leg of which hub is shown in broken lines in Figs. 10 and 11, and has an up-' wardly extending arm I44. At its forward end the lever I43 has an arm I45 adapted to rest against a cam face I46 of the intermittent gear 96, as shown in Fig. 8. A stud I41 secured to lever I43 engages the bifurcated end of a link I48 pivoted on a shaft I49. An upwardly extendingarm I5I of link I48 pivoted on a shaft I49 normally engages a bent over portion or hook I50 formed on a vertical arm I40 of transverse bar I52 extending across the several orders of the machine, said bar I52 being pivoted on the shaft I49.

Lock arms I53 which are secured to bar I52 are pivoted on shaft I49, one lock arm being provided for each order of keys. Upon initial op- I49, allowingthe transverse bar I52 to rock rearwardly through the tension of spring I51, one end of which is attached at I54 to the link I48. This action rocks the lock arm's I53 in each column rearwardly into the path of travel of the column actuators 22 and restrains any movement of the said column actuators through operation of the keys I8. As earlier described, upon full rotation of the crank 69, it is halted in its travel by the stop I23 at which time it again presents the cam face I45 to the arm I45 of the lever I43 lowering the rear arm of the lever and rocking the link I48 forwardly oscillating the transverse bar I52 and rocking the lock arms out of the path of travel of the column actuators 22.

The locking mechanism for preventing depression of a numeral key while transfer of totals from the ordinary numeral wheels to the supertotalizer wheels is being effected, also functions to allow only a limited movement of the ordinary zero crank 45 during rotation of the crank 69 thereby preventing any chance of error through zeroizing of the numeral wheels in the ordinary registering mechanism while transferring the totals to the super-totalizer registering mechanism. The operation of zeroizing with the attendant forward rocking of the shaft 53 has been described. If a zeroizing operation is attempted the arm 52 attached to the shaft 53 will be rocked forward until'it comes in contact with the shoulder I55 of arm I5I where it is restrained from further movement as shown in dotted lines in Fig. 10.

Means are provided for locking crank handle 69 and super-totalizer mechanism in the event of a transfer being attempted while an error because of a partial key stroke is left in the ordinary mechanism. As has been fully described in the patents hereinbefore mentioned, when a partial key stroke has occurred, the column actuators 22 are held in a depressed condition until the key stroke has been completed or given its full depression. This locking of the mismanipulated column actuator 22 in a lowered position, such as that of Fig. 11, is accomplished through the agency of the lever or detent I58 (Fig. 2), which is indicated by reference numeral I08 in the Ziehm Patent No. 1,110,734 above referred to, and more particularly described therein. If an attempt is made to transfer the totals in the ordinary registering mechanism to the supplemental registering mechanism by rotation of the crank 69, it will be found that the crank is locked after an initial movement if an error has been made in the ordinary registering mechanism. As earlier described, upon movement of the crank 69, link I48 is raised and rocked rearwardly through its connection with the lever I43 with a coincident rearward rocking of the lock arms I53. If a column actuator 22 is depressed the lock arms I53 will bear against the column actuators 22 which are in its path thereby preventing further movement of the lock armand permitting only a very limited movement to the transverse bar I52 as shown in Fig. 11. The arm I44 of the lever I43, upon being raised upon the initial stroke of the crank 69, engages hook I50 on the arm I40 of transverse bar I52 and is restrained from' further movement. Upon completing the key stroke the column actuator is fully depressed and then is allowed to rise to its normal position, leaving open the path of the lock arms I53 so that the crank 09 may be rotated.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

We claim:

1. In a calculating machine having an ordinary registering mechanism, means for zeroizing said ordinary registering mechanism including a manually operable member, supplemental registering mechanism, means for transferring totals from said ordinary registering mechanism to said supplemental registering mechanism, means for blocking the operation of said manually operable member, and means operable by said transfer means for moving said last named means into blocking position.

2. In a calculating machine having an ordinary registering mechanism, a supplemental registering mechanism, compensating means for transferring totals from said ordinary registering mechanism to said supplemental mechanism, means for zeroizing said supplemental registering mechanism, a member operable by said zeroizing means, and means movable by said transfer means in the operation thereof into blocking relationship with said member to lock'said zeroizing means against operation.

3. In a calculating machine having ordin ry registering mechanism, a supplemental registering mechanism, compensating means for transferring totals from said ordinary registerin mechanism to said supplementalregistering mechanism, means for zeroizing said supplemental registering mechanism, a member operable by said transfer means, and means movable by said zeroizing means in the operation thereof into blocking relationship with said member to lock said transfer means against operation.

4. In a calculating machine having an ordinary registering mechanism, actuating mechanism therefor, keys for actuating said actuating mechanism to accumulate totals in said ordinary registering mechanism, a supplemental registering mechanism, means for transferring totals from said ordinary registering mechanism to said supplemental registering mechanism, means for blocking the operation of said transfer means at the end of oneoperation thereof, and means controlled by the actuation of a said key to cause the release of said blocking means.

5. In a calculating machine having an ordinary registering mechanism, actuating mechanism therefor, keys for actuating said actuating mechanism, means for locking said actuating mechanism in event of a partial key stroke, a supplemental m, means for transferrlng totals from said ordinary registering mechanism to said supplemental registering mechanism, and means for locking said transfer means in event of a partial key stroke, comprising members movable into the path of movement of said actuating mechanism, and means operatively associated with said transfer means for moving said members.

6. In a calculating machine having an ordinary registering mechanism, actuating mechanism therefor, keys for actuating said actuating mechanism, means for locking said actuating mechanism in event of a partial key stroke, a supplemental registering mechanism, means for transferring totals from said ordinary registering mechanism to said supplemental registering mechanism, manipulative means for controlling said transfer means, a member movable into the path of movement of said actuating mechanism,

andmeans operatively associated with said ma-' nipulative means and said member for lockins said manipulative means in event of a partial key stroke.

7. In a calculating machine having an ordinary registering mechanism and a supplemental registering mechanism, means for transferring totals from said ordinary registering mechanism to said supplemental registering mechanism, and means for locking said transfer means after said transfer of tatals has been completed, comprising a member moved into locking position by said transfer means.

8. In a calculating machine having an ordinary registering mechanism, actuating mechanism therefor, a supplemental registering mechanism, means for transferring totals from said ordinary registering mechanism to said supplemental registering mechanism, and means for locking said transfer means after a transfer of totals until reactuation of said actuating mechanism, com-' prising a member moved into locking position by and during the operation of said transfer means. 9. In a calculating machine having an ordinary registering mechanism, actuating mechanism therefor, keys for controlling said actuating mechanism, a supplemental accumulator, means for transferring totals from said ordinary registering mechanism to said supplemental accumulator, and means for locking said transfer means after a transfer of totals has been completed, comprising a member movable to operative position by said transfer means and movable to inoperative position through the subsequent action of a said key.

10. In a calculating machine having an ordinary accumulator, actuating mechanism therefor, a supplemental accumulator, and means for transferring amounts from said ordinary accumulator to saidsupplemental accumulator; means for blocking the operation of said transfer means at the end of one operation thereof, and means controlled by the operation of said actuating mechanism to cause the release of said blocking means.

11. In a caulculating machine having an ordinary accumulator, actuating mechanism therefor, keys for controlling said actuating mechanism, a supplemental accumulator, and means for transferring amounts from said ordinary accumulator to said supplemental accumulator; means movable by said transfer means in the operation thereof, and means for locking said actuating mechanism in partially operated position upon mismanipulation of a key to block movement of said last named means to prevent operation of said transfer means,

FREDERICK A. NIEMANN. J A. V. TM 

